#4083 πῆχυς pechus {pay'-khoos}

 of uncertain affinity; TDNT - n/a; n m

—Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)

 1) a cubit
 2) a measure of length equal to distance from the joint of the
    elbow to the tip of the middle finger (i.e. about 18 inches,
    (.5 m) but its precise length varied and is disputed)

—Thayer's (New Testament Greek-English Lexicon)

—Strong's (Greek Dictionary of the New Testament)

—NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries

 AV - cubit 4; 4

—Exhaustive Concordance (KJV Translation Frequency & Location)